rectangle - a four-sided figure in which the opposte sides have the same length and all four interior angles are right angles (90 degrees).square - a rectangle in which each side is the same length.parallelogram -a four-sided figure in which the opposte sides are parallel to each other and the opposite sides have the same length.rhombus - a type of parallelogram in which each side is the same length.trapezoid - a four-sided figure that has two opposite sides that are parallel to each other.kite - a four-sided figure shaped like a diamond in which the two pairs of adjacent sides have the same length.